Mustang Bio, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

License Agreements and Clinical Research Support Agreements (Details Textual)

License Agreements and Clinical Research Support Agreements (Details Textual) - USD ($)		1 Months Ended				3 Months Ended		9 Months Ended		12 Months Ended
	Jul. 03, 2017	May 31, 2017	Mar. 17, 2017	Feb. 28, 2017	Feb. 17, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Research And Development Expense, Sponsored Research Payment					$ 2,000,000
Research and Development Expense						$ 500,000	$ 500,000	$ 1,500,000	$ 1,500,000
Common Stock, Shares, Outstanding						25,232,139		25,232,139		15,165,244
Professional Fees						$ 60,000	$ 17,500	$ 90,000	$ 30,300
Psca Technology License [Member]
Payment Of Upfront Fees		$ 300,000
Revenue Recognition Milestone Method Payments Due		14,900,000
Maintenance Costs		50,000
Cs Technology License [Member]
Payment Of Upfront Fees		600,000
Revenue Recognition Milestone Method Payments Due		14,900,000
Maintenance Costs		$ 50,000
Stephen Forman [Member]
Annual Consulting Fees										$ 60,000
Christine Brown [Member]
Annual Consulting Fees										$ 60,000
University of California [Member]
Development Milestones Method Additional Payments Due			$ 14,300,000
University of California [Member] \| UCLA License [Member]
Payment Of Upfront Fees			200,000
Other Commitment, Due in Next Twelve Months			15,000
Other Commitment, Due in Third Year			25,000
Other Commitment, Due in Second Year			15,000
Other Commitment, Due in Fifth Year			50,000
Other Commitment, Due in Fourth Year			$ 25,000
City Of Hope [Member]
Revenue Recognition Milestone Method Payments Due					100,000
Stock Issued During Period, Shares, Purchase of Assets								293,588
Payments for Other Fees					100,000
City Of Hope [Member] \| AR CD123 License [Member]
Payment Of Upfront Fees				$ 19,450
Revenue Recognition Milestone Method Payments Due					14,500,000
Research And Development Expense, Sponsored Research Payment				200,000
Research and Development Expense						600,000		$ 1,200,000
Licensing Arrangements Additional Costs Incurred				97,490
Maintenance Costs				25,000
City Of Hope [Member] \| IL License [Member]
Revenue Recognition Milestone Method Payments Due					$ 14,500,000
Research And Development Expense, Sponsored Research Payment				200,000
Maintenance Costs				25,000
City Of Hope [Member] \| Her2 Technology License [Member]
Payment Of Upfront Fees	$ 600,000
Revenue Recognition Milestone Method Payments Due	14,900,000
Maintenance Costs	50,000
City Of Hope [Member] \| Spacer License [Member]
Maintenance Costs				10,000
City Of Hope [Member] \| IL13Ra2 [Member]
Payment Of Upfront Fees				9,300
Research and Development Expense						200,000		1,200,000
Licensing Arrangements Additional Costs Incurred				$ 100,000
Fred Hutchinson Cancer Research Center [Member] \| CD20 Technology License [Member]
Payment Of Upfront Fees	300,000
Maintenance Costs	50,000
Development Milestones Method Additional Payments Due	39,100,000
Fred Hutchinson Cancer Research Center [Member] \| CD20 Clinical Agreement [Member]
Payment Of Upfront Fees								400,000
Research And Development Expense, Sponsored Research Payment	$ 5,300,000
Research and Development Expense						$ 88,000		$ 88,000
Common Class A [Member]
Stock Issued During Period, Shares, Purchase of Assets								0
Common Stock, Shares, Outstanding						1,000,000		1,000,000		1,000,000
Noncontrolling Interest, Ownership Percentage by Parent						5.00%		5.00%